I'm going 1JZ | Page 5 | The Z Club of Great Britain
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I'm going 1JZ

Discussion in 'Hybrid Z cars' started by Russell, Dec 28, 2016.

  1. Rob Gaskin

    Rob Gaskin Treasurer Staff Member Moderator

    That brought a smile to my face.
     
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  2. AliK

    AliK
    Z Club Member
    Staff Member Moderator

    I'm sure the club strippers would put me right but I believe it's

    1. reaction time (you probably won't need that unless you are going to get it to count down)

    2. 60ft time

    3. 330ft time

    4. 1/8th time and mph

    5. 1000ft time and MPH

    6. Quarter mile time and MPH

    You could just put it in quarter mile "mode" and start counting from the moment the speedo / odo starts registering or if you have the ability or code space give it a 5 second count down with either beeper or dash virtual lights (now that would be cool!).
     
  3. Russell

    Russell
    Z Club Member

    I like the idea of that. Only problem being that Wheelspin will effect the results badly.


    Sent from my iPhone using Tapatalk
     
  4. AliK

    AliK
    Z Club Member
    Staff Member Moderator

    You know, I hadn't even considered that - I always get a clean get away :p

    But in all seriousness, how much will a small amount of spin really skew the actual 1/4 mile reading? Say 20 feet in 1320 which is approx 1.5% error in distance / time. I can live with that ;)

    Next excuse!? :p
     
  5. Russell

    Russell
    Z Club Member

    You have seen the engine I’m putting in it haven’t you?
    Pretty sure it will still be spinning the wheels into 5th gear!


    Sent from my iPhone using Tapatalk
     
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  6. AliK

    AliK
    Z Club Member
    Staff Member Moderator

  7. Russell

    Russell
    Z Club Member

    That is certainly another way to do it. Comes with its own challenges, especially with updating mileage or driving through a tunnel.

    My Arduino were about £1 each, screens less than £5 each, stepper motor £6 for two as need one for my tacho to, rotary encoder £1.30.
    It’s not an expensive part of the project!


    Sent from my iPhone using Tapatalk
     
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  8. franky

    franky
    Z Club Member

    Nice work.

    I've a stack st700 in another project.... which you seem to have built.

    so I'd say

    Display rpm
    oil temp
    water temp
    peak rpm
    peak speed
    peak temps


    can you make it a sequential shift light?
     
  9. Russell

    Russell
    Z Club Member

    The tacho will have its own one thats linked to the ECU to display error messages, AFR, Boost Pressure and Oil temp. I could add a shift light to the screen on the Tacho but dont want to add any additional lights to the dash..... Actually, I could have the whole tacho change colour when its time to shift with some neopixels.....

    Peak speed etc. a good idea. Will look at adding those.

    Im by no means an expert with programming so it takes me a long time, a lot of trial and error and googling. Its one of those things that touching something seemingly unrelated breaks the entire thing!
     
    franky likes this.
  10. Woody928

    Woody928
    Z Club Member
    Staff Member Moderator

    :EXTRAlol:You'll have to stop having so many kids so that you can get away to the workshop and back to the project.

    I really do look forward to watching the progress, it's going to be epic once you get it all up and running!
     
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  11. Russell

    Russell
    Z Club Member

    Been doing a bit more work on the speedo.

    I have ironed out enough bugs to think about permanently soldering it together along with working out how to fit it all in the original housing whilst utilising the original needle, face, high beam and beam light locations, original illumination.
    The end goal being that digital screens are the only thing out of the ordinary and without the ignition being on, wouldn’t even catch your eye.

    So, in some really easy, not at all time consuming simple steps I made a few circuit board to mount the screens in the right place.

    Front
    [​IMG]
    Rear
    [​IMG]

    Then I mounted the Arduino and stepper motor to another board. Along with some plugs so I can actually connect it to the car.

    Front
    [​IMG]
    Rear
    [​IMG]

    Not got as far as the control knob yet so that’s still reasonably loose
    [​IMG]

    A power supply to take the dangerous and dirty (for Arduino’s) car voltage down to a nice and safe 5v and that’s all the ingredients.
    [​IMG]

    Bolt the screens in
    [​IMG]

    Stack the other boards on top and plug them in
    [​IMG]

    Screw the face back on
    [​IMG]
    [​IMG]

    Push the needle on
    [​IMG]

    Then simply write 700 lines of code so everything talks to everything and does what you want and voila.
    One digital speedo that will work with my 1JZ ECU.
    [​IMG]
    [​IMG]

    Simple really.....


    Sent from my iPhone using Tapatalk
     
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  12. jonbills

    jonbills
    ZClub Administrator
    Staff Member Moderator

    Easy peasy
     
  13. AliK

    AliK
    Z Club Member
    Staff Member Moderator

    [​IMG]

    Truly incredible finish Russ!!!!!!!!!
     
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  14. johnymd

    johnymd
    Z Club Member

    That is super cool.

    I finally got around to adjusting my tacho you build so it worked with 8 cylinders (4 pulses). It was as simple as you said so the zed gauge is now calibrated spot on with my ECU numbers. I still need to find a solution for the speedo.
     
  15. Russell

    Russell
    Z Club Member

    Great news!

    Just build one of these and you have a solution for the speedo as well!

    To be honest the actual development is done and I’m happy to share it with you. All in the parts are about £20!!

    Took me about 2 days to work out how to position it all and wire it into the pcbs.

    The code could easily be adjusted to take the signal from your auto gearbox


    Sent from my iPhone using Tapatalk
     
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  16. WazzaJB

    WazzaJB
    Z Club Member

    This is awesome to see Russell, I often wonder what could be achieved with Arduino/Pi in a classic car. Just goes to show with the right experience you could put a lot of modern tech in a classic car relatively inexpensively... foregoing cost of time.
     
  17. Russell

    Russell
    Z Club Member

    Cheers,

    Technically you can do whatever you want.

    Everything I have done here is just maths based on the information the arduino has access to (Pulse from the Gearbox and time).

    Wait until you see what I am doing with the Tacho. That will be a lot smarter as it will receive multiple inputs directly from the ECU as well as being connected to an Wideband AFR, Oil Temperature and Boost pressure sensor.
    All providing information to a tiny screen at the right time without any input from the driver at all (In colour as well...)

    Not actually started that one yet so give me another couple of years...
     
  18. WazzaJB

    WazzaJB
    Z Club Member

    Not sure I'd be much use giving how you've smashed that but if you ever need an extra set of eyes on the code let me know :) I've got a little Arduino experience but sadly little-to-none hardware experience.

    Really look forward to seeing the Tacho too. Hopefully I can pursue similar ventures in the future and share experiences.
     
  19. johnymd

    johnymd
    Z Club Member

    Are you using the same circuit board as the tacho to move the needle on the speedo?
     
  20. franky

    franky
    Z Club Member

    I like a man who's projects take years. :)
     
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